343
FNCA52 TJSJ 040730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 AM AST SAT APR 4 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-042000-
SOUTHEAST COASTAL PLAINS-
330 AM AST SAT APR 4 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 40 70 60
TEMP (24H TREND) 87 (+2) 70 (-1) 86
RH % (24H TREND) 59 (+4) 94 (+3) 62
WIND 20FT/EARLY(MPH) E 16 E 13 E 17
WIND 20FT/LATE(MPH) E 16 E 11 E 17
MIXING HGT(FT-AGL/MSL)4810 4390
TRANSPORT WND (MPH) E 16 E 18
VENT RATE (KT-FT) 67340 70240
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-042000-
SOUTHERN HILLS-
330 AM AST SAT APR 4 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 40 60 70
TEMP (24H TREND) 83 (+4) 67 (-2) 82
RH % (24H TREND) 65 (-4) 99 (+7) 69
WIND 20FT/EARLY(MPH) E 12 E 12 E 13
WIND 20FT/LATE(MPH) E 12 E 12 SE 13
MIXING HGT(FT-AGL/MSL)5500 4920
TRANSPORT WND (MPH) E 15 E 17
VENT RATE (KT-FT) 71500 73800
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-042000-
NORTH COASTAL PLAINS-
330 AM AST SAT APR 4 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 70 90
TEMP (24H TREND) 86 (+3) 69 (-2) 85
RH % (24H TREND) 63 (-5) 100 (+4) 64
WIND 20FT/EARLY(MPH) E 13 E 17 E 13
WIND 20FT/LATE(MPH) E 18 E 14 E 18
MIXING HGT(FT-AGL/MSL)5050 4730
TRANSPORT WND (MPH) E 16 E 16
VENT RATE (KT-FT) 70700 66220
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-042000-
NORTHERN HILLS-
330 AM AST SAT APR 4 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 80 40 100
TEMP (24H TREND) 85 (+4) 67 (-2) 85
RH % (24H TREND) 60 (-9) 100 (+3) 63
WIND 20FT/EARLY(MPH) E 12 E 14 E 12
WIND 20FT/LATE(MPH) E 14 E 11 E 16
MIXING HGT(FT-AGL/MSL)5770 5420
TRANSPORT WND (MPH) E 14 E 15
VENT RATE (KT-FT) 69240 70460
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-042000-
WEST COAST-
330 AM AST SAT APR 4 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 50 20 60
TEMP (24H TREND) 87 (+1) 69 (0) 87
RH % (24H TREND) 61 (-3) 99 (+4) 64
WIND 20FT/EARLY(MPH) E 12 E 12 E 14
WIND 20FT/LATE(MPH) E 14 E 11 SE 16
MIXING HGT(FT-AGL/MSL)4980 4470
TRANSPORT WND (MPH) E 12 E 14
VENT RATE (KT-FT) 49800 53640
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-042000-
EASTERN INTERIOR-
330 AM AST SAT APR 4 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 50 70 80
TEMP (24H TREND) 83 (+3) 68 (-2) 83
RH % (24H TREND) 67 (-4) 100 (+4) 68
WIND 20FT/EARLY(MPH) E 13 E 13 E 13
WIND 20FT/LATE(MPH) E 12 E 13 E 14
MIXING HGT(FT-AGL/MSL)5590 4390
TRANSPORT WND (MPH) E 15 E 17
VENT RATE (KT-FT) 72670 65850
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-042000-
LUQUILLO MOUNTAIN RANGE-
330 AM AST SAT APR 4 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 50 70 80
TEMP (24H TREND) 79 (+2) 65 (-3) 79
RH % (24H TREND) 72 (-2) 100 (+1) 73
WIND 20FT/EARLY(MPH) E 11 E 10 E 12
WIND 20FT/LATE(MPH) E 11 E 10 E 12
MIXING HGT(FT-AGL/MSL)3820 3200
TRANSPORT WND (MPH) E 16 E 18
VENT RATE (KT-FT) 53480 51200
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-042000-
CENTRAL MOUNTAIN RANGE-
330 AM AST SAT APR 4 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 30 80
TEMP (24H TREND) 83 (+5) 64 (-2) 82
RH % (24H TREND) 63 (-8) 100 (+3) 66
WIND 20FT/EARLY(MPH) E 10 E 10 SE 10
WIND 20FT/LATE(MPH) E 10 E 10 SE 10
MIXING HGT(FT-AGL/MSL)6100 5630
TRANSPORT WND (MPH) E 12 E 15
VENT RATE (KT-FT) 61000 73190
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-042000-
CAYEY MOUNTAIN RANGE-
330 AM AST SAT APR 4 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 50 70 70
TEMP (24H TREND) 78 (+1) 67 (-1) 78
RH % (24H TREND) 73 (-2) 100 (+2) 75
WIND 20FT/EARLY(MPH) E 10 E 10 E 11
WIND 20FT/LATE(MPH) E 10 E 10 E 11
MIXING HGT(FT-AGL/MSL)4530 3640
TRANSPORT WND (MPH) E 16 E 18
VENT RATE (KT-FT) 63420 58240
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-042000-
VIEQUES-
330 AM AST SAT APR 4 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 40 50 50
TEMP (24H TREND) 85 (0) 72 (-1) 85
RH % (24H TREND) 61 (-1) 93 (+4) 61
WIND 20FT/EARLY(MPH) E 17 E 18 E 17
WIND 20FT/LATE(MPH) E 14 E 17 E 17
MIXING HGT(FT-AGL/MSL)3160 3040
TRANSPORT WND (MPH) E 21 E 22
VENT RATE (KT-FT) 56880 57760
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-042000-
CULEBRA-
330 AM AST SAT APR 4 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 40 50 50
TEMP (24H TREND) 85 (0) 72 (-3) 85
RH % (24H TREND) 61 (-3) 94 (+6) 62
WIND 20FT/EARLY(MPH) E 17 E 18 E 17
WIND 20FT/LATE(MPH) E 14 E 17 E 17
MIXING HGT(FT-AGL/MSL)3190 3100
TRANSPORT WND (MPH) E 21 E 22
VENT RATE (KT-FT) 57420 58900
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-042000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 AM AST SAT APR 4 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 30 60 40
TEMP (24H TREND) 88 (+2) 70 (0) 87
RH % (24H TREND) 58 (+4) 95 (+6) 59
WIND 20FT/EARLY(MPH) E 18 E 13 E 19
WIND 20FT/LATE(MPH) E 20 E 14 E 21
MIXING HGT(FT-AGL/MSL)5230 4540
TRANSPORT WND (MPH) E 20 E 21
VENT RATE (KT-FT) 88910 81720
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-042000-
SAINT THOMAS AND SAINT JOHN-
330 AM AST SAT APR 4 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY MCLDY
PRECIP TYPE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 40 50 60
TEMP (24H TREND) 85 (+1) 72 (-3) 85
RH % (24H TREND) 59 (-4) 94 (+6) 59
WIND 20FT/EARLY(MPH) E 17 E 18 E 18
WIND 20FT/LATE(MPH) E 16 E 17 E 18
MIXING HGT(FT-AGL/MSL)3260 3110
TRANSPORT WND (MPH) E 22 E 22
VENT RATE (KT-FT) 61940 59090
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-042000-
ST CROIX-
330 AM AST SAT APR 4 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 40 50 60
TEMP (24H TREND) 86 (+1) 71 (-3) 86
RH % (24H TREND) 61 (-3) 96 (+6) 61
WIND 20FT/EARLY(MPH) E 16 E 17 E 17
WIND 20FT/LATE(MPH) E 14 E 17 E 17
MIXING HGT(FT-AGL/MSL)3850 3700
TRANSPORT WND (MPH) E 18 E 22
VENT RATE (KT-FT) 61600 70300
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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